Set in 1906, The New York Idea follows Cynthia, a recently divorced woman who plans to remarry wealthy lawyer and fellow divorcee Philip. When Cynthia learns her ex-husband John has lost his fortune and plans to sell her prized horse to Philip’s ex-wife, the flamboyant Vida, she begrudgingly calls on Vida to try to convince her not to buy the animal. The group soon finds themselves tangled in arguments and banter on the day of John and Cynthia’s wedding, and it soon becomes apparent that past romantic feelings may have not completely disappeared.